{
\def\sym#1{\ifmmode^{#1}\else\(^{#1}\)\fi}
\begin{tabular}{l*{6}{c}}
\toprule
            &\multicolumn{1}{c}{Nonmetallic mineral manu (66)}&\multicolumn{1}{c}{Wood manu (63)}&\multicolumn{1}{c}{Leather goods (61)}&\multicolumn{1}{c}{Rubber (23)}&\multicolumn{1}{c}{Soap (55)}&\multicolumn{1}{c}{Clothing (84)}\\\cmidrule(lr){2-2}\cmidrule(lr){3-3}\cmidrule(lr){4-4}\cmidrule(lr){5-5}\cmidrule(lr){6-6}\cmidrule(lr){7-7}
            &\multicolumn{1}{c}{(1)}   &\multicolumn{1}{c}{(2)}   &\multicolumn{1}{c}{(3)}   &\multicolumn{1}{c}{(4)}   &\multicolumn{1}{c}{(5)}   &\multicolumn{1}{c}{(6)}   \\
\midrule
{}          &    -0.00739   &     -0.0458   &     -0.0374   &     -0.0335   &     -0.0737** &     -0.0273   \\
            &    [0.0242]   &    [0.0296]   &    [0.0308]   &    [0.0189]   &    [0.0287]   &    [0.0215]   \\
\midrule
N           &         122   &         122   &         122   &         122   &         122   &         122   \\
\bottomrule
\end{tabular}
}
